Lock-nut.



No. 732,590. PATBNI'BD JUNE 30, 1903 A. SCHOLER.

LOCK NUT.

APPL; ooooooooooooooooooooo 2.

OOOOOOO UNITED 'STATES Patent-ea June 3o, loos;

PATENT Qualen;

AUGUST SOHOLER, OF PITTSBURG, PENNSYLVANIA.

LOCK-NUT.

SPECIFICATION forming part yof Letters Patent N o. 732,590, dated June30, 1903.

Application led January Z7, 1902. Serial No. 91,364. (No modeLl l To allwhom it' may concern:

Be it known that I, AUGUST SCHOLER, a citizen of the United States ofAmerica, residing at Pittsburg, in the county of Allcgheny'and State ofPennsylvania, have invented certain new and useful Improvements inLock-Nuts, of which the following is a specification, reference beinghad therein to thel accompanying drawings.L j

This invention relates to certain new and useful improvements inlock-nuts, and has for its object a device of this character wherein thenut contacting with the object to be locked shall be held in a manner soas to effectually prevent the same from working or jarring loose. v Y

My invention has for its further object a device of this character whichshall be extremely simple in construction,comparati vely inexpensive tomanufacture, and highly etlicient in its use.

The invention further resides in the novel combination and arrangementof parts to be hereinafter more fully described, and specificallypointed out in the claims.

In describing the invention in detail reference is had to theaccompanying drawings, forminga partof this specification, and whereinlike numerals of reference indicate like parts throughout the severalViews,in which- Figure l is an elevation of a bolt, showing my improvedlock-nut secured thereto and in central vertical section. Fig. 2 is aplan view ofthe outer face of the securing-nut. Fig. 3 is a like view ofthe inner face of the locking-nut.

My'invention aims to effect an engagement with the securing-nutcontacting with the articles to be locked in a manner that when thelock-nut is actuated to form an engagement Y with the securing-nut thelatter will exert seat has its walls tapering inwardly toward thethreaded opening and is so arranged that the flat portion 4 will beformed between the walls of the depression or seat and the portion ofthebolt in a manner as will cause its ridge or bead 7 to engage the seat ordepression 4, the nut 5 then being tightened, which will cause theeccentric ridge or bead to contact with the seat or depression andeffect a secure engagement. It will be noted that the ridge or bead 7has its edge slightly rounded,

threaded opening 3. The outer face of this a as at 8, corresponding to alike curved portion 9 in the seat or depression. It vwill also be notedthat the taper ol' the bead or ridge'is such as will permit the entireperiphery thereof toengage the walls formed by the seat or depression.Thus when the parts are ina locked position the entire periphery of thebead is in contact with the inner circumferencev of the seat ordepression, at which time the inner face of the locking-nut 5 and theouter face of the securing-nut will be found to be in contact.. Y Whilethe accompanying drawings illustrate the most practical form of myinvention,

still it is obvious that minor changes in the details of constructionand combination of parts may be made without departing from the generalspirit and scope of the invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, isi l. In a lock-nut, the combination ofabolt, of a securing-nut provided with'a central boltopening and havingan eccentrically-arranged depression around said bolt-opening, the wallsof said depression tapering inwardly to the bolt-opening and having aflat portion formed between the same and the said opening and alocking-nut having an eccentric projection surrounding a centralbolt-opening therein, said projection having its outer walls taperedoutwardly toward the periphery of said nut and the upper portion of saidprojection be- IOO ing fiat, said fiat portion adapted t0 be receivedwithin the depression of the securingnut and to engage with the flatportion thereof, substantially' as described and for the purpose-setforth. p

2. In a nut-lock, the combination of a bolt, of a securing-nut providedwith a central boltopeningand having an eccentricallyarranged depressionaround said boltopening,the walls of said depression tapering inwardlyto the bolt-opening, the bottom of said depression being Hat, and acurved portion formed between the said tapering and Hat portions, and alocking-nut provided with a central boltopening and having an eccentricprojection

